French 18K yellow gold open faced pocket watch Circa 1850

Gold key wound cylinder watch
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A French 18 carat yellow gold open faced pocket watch from the mid 19th century. It has a key wound mechanical movement with cylinder escapement and eight ruby holes. The white enamel dial features Roman numerals, a chemin de fer minute track with cracks and chips, and Breguet style hands. The round case is hinged, with a fluted caseband, guilloché back decorated with a foliate motif, and a gold bowl. Accompanied by two keys.
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Diameter: 44 mm
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Weight: 54 g
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Signed: No name